Part Number: ADBMS6815
Function: 12-Channel Multicell Battery Monitor
Package: 48-lead LQFP package
Manufacturer: Analog Devices ( https://www.analog.com/ )
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Description
The ADBMS6815 is a multicell battery stack monitor that measures up to 12 series connected battery cells with a lifetime total meas urement error (TME) of less than 1.5 mV. The measurement range of 0 V to 5 V makes the ADBMS6815 suitable for most battery chemistries. All 12 cells can be measured in 304 µs, and lower data acquisition rates can be selected for high noise reduction. Multiple ADBMS6815 devices can be connected in series, permit ting simultaneous cell monitoring of long, high voltage battery strings.
Each ADBMS6815 has an isoSPI™ interface for high speed, RF immune, long distance communications. Multiple devices are connected in a daisy chain with one host processor connection, which can be operated bidirectionally, ensuring communication integrity even in the event of a fault along the communication path.
Typical Application Circuit
Features
1. Measures up to 12 battery cells in series
2. Maximum lifetime total measurement error: 1.5 mV
3. Stackable architecture for high voltage battery packs
4. Built-in isoSPI interface
(1) 2 Mb isolated serial communications
(2) Uses a single twisted pair, up to 20 meters
(3) Low EMI susceptibility and emissions
(4) Bidirectional for broken wire protection
(5) Capacitor or transformer coupled
5. Diagnostics for IC and application circuit failure modes
6. 304 µs to measure all cells in a system
7. 16-bit ADC with programmable noise filter
8. Passive cell balancing up to 300 mA per channel with program mable PWM
Applications
1. Electric and hybrid electric vehicles
2. Backup battery systems
3. Grid energy storage
4. Large portable power banks
ADBMS6815 Datasheet PDF
